Drill Bit Release Device Using Spring-Driven Impact Mechanism
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Solution Overview
Problem
Existing devices for releasing stuck drill bits in masonry or concrete require significant physical effort and pose safety risks, especially when used vertically, due to the need for manual acceleration of a weight against a stop.
Innovation Solution
A device featuring a compression spring and a gripping element that allows for simple acceleration of a weight against a stop, with an optional compressed air supply to generate impact energy, reducing manual effort and safety hazards by positioning the weight within a tubular hollow body.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If a weight is manually accelerated against a stop to release a stuck drill bit, then impact energy is generated to loosen the drill bit, but significant physical effort is required and safety risks increase
Solution Approach 1:
The compression spring is pre-tensioned in advance to store potential energy. When the gripping element releases the weight, the spring automatically accelerates the weight against the stop without requiring manual effort during the impact phase. This preliminary energy storage resolves the contradiction by eliminating the need for continuous physical effort during operation.
Solution Approach 2:
The device uses its own components (compression spring and weight) to generate the impact energy needed for release. The spring automatically propels the weight when released, making the system self-actuating without external manual intervention. This self-service mechanism eliminates the need for operators to exert significant physical effort.
2Power
If a weight is manually accelerated against a stop to release a stuck drill bit, then impact energy is generated to loosen the drill bit, but safety risks increase due to risk of body parts getting between weight and stop
Solution Approach 1:
The compression spring acts as an intermediary between the operator and the weight. Instead of the operator directly handling the weight during acceleration, the spring mediates the energy transfer by automatically propelling the weight. This intermediary mechanism eliminates the safety hazard of fingers or body parts being pinched between the weight and stop during manual acceleration.
Solution Approach 2:
The manual mechanical acceleration system is replaced with a spring-driven automatic acceleration system. The compression spring substitutes for manual human force, automatically accelerating the weight without requiring the operator's hands or body parts to be in the danger zone. This mechanical substitution resolves the safety contradiction.
3Ease of operation
If the device is arranged vertically to use body weight, then ergonomics improve, but the risk of injury increases due to uncontrolled weight movement
Solution Approach 1:
The compression spring serves as a controlled intermediary that manages the weight's movement. Even when the device is arranged vertically to leverage body weight for spring tensioning, the spring controls the weight's acceleration and direction. This intermediary control prevents uncontrolled weight movement, resolving the contradiction between ergonomic benefits and injury risk.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution significantly reduces the physical effort required and minimizes the risk of injury by leveraging the compression spring and optional compressed air for efficient impact energy, enhancing ergonomics and safety during operation.
Implementation Method 1
a compression spring (14) is arranged inside the tubular hollow body (11) on the threaded socket side
Implementation Method 2
the drive device is designed as a compressed air supply device, preferably a compressed air cylinder, which can be fastened to the hollow body and which can be used to generate a sudden overpressure between the end region on the drill bit side and the weight
Implementation Method 3
When the handle-equipped, plate-like weight hits the stop, the impact energy acting on the core bit should cause the latter to detach from the masonry/concrete
Data Source
Figure 1~2
Figure 3~4
AI summary
The device (10) has a weight (15), which is moved from the drill bit (20) in the direction of a stop, and a drive unit, by which the weight is accelerated within an elongated hollow body (11) from a position located near the drill bit in the direction of the stop. The elongated hollow body is formed in a tubular manner. A compression spring (14) is arranged between the weight and the drill bit-sided end portion of the hollow body. USE : Device for releasing a drill bit fixed in brickwork or concrete. ADVANTAGE : The device has a drive unit, by which the weight is accelerated within an elongated hollow body (11) from a position located near the drill bit in the direction of the stop, and hence ensures improved ergonomics and increased safety of the drill bit releasing device. DESCRIPTION OF DRAWINGS : The drawing shows a schematic sectional view of a drill bit releasing device in a clamped state. 10 : Drill bit releasing device 11 : Elongated hollow body 14 : Compression spring 15 : Weight 20 : Drill bit.